I recently had to do a full reset on an edge 500. I backed up the files F:\Garmin\Settings\Settings.fit, and F:\Garmin\Sports\Cycling.fit, then copied them back. All fine and good, but it got me wondering if there is a program that lets you edit these .fit files from a desktop, rather than scrolling through all the menus on the device.
Edit
I tried copying them to mycomputer, changing the extension to .txt, but they are not text files.